Table 6 Percentage of lateral dose profile points passing the three Γ-criteria with the initial electron beam energy fixed at 6.26 MeV, the energy FWHM at 0.150 MeV and beam divergence at default value of 0.The number of histories is 2.5 × 107
From: Linac photon beam fine-tuning in PRIMO using the gamma-index analysis toolkit
| Focal Spot FWHM (cm) | Average Dose Uncertainty (%) | 3 % /3mm (%) | 2 % /2mm (%) | 1 % /1mm (%) |
|---|---|---|---|---|
| 0.10 | 7.9 | 100.0 | 98.8 | 67.7 |
| 0.12 | 7.9 | 100.0 | 100.0 | 68.9 |
| 0.14 | 7.9 | 100.0 | 99.4 | 72.1 |
| 0.15 | 7.9 | 100.0 | 100.0 | 78.9 |
| 0.16 | 7.9 | 100.0 | 93.8 | 75.2 |